Electric motor.



G. W. RICHARDSON.

ELECTRIC MOTOR.

APPLICATION FILED JAN. 22 1907.

907, 176. Patented B63122, 190s.

INVENTOR I RMUQM a:

WITNESSES 7 no. .ewvyrre.

I vBe it known that I, GEORGE W.

"GE RGE' w. RICHARDSON, or

wrssaniciion, rruusrtvamai anaemic ntor'oa Sp eciheation. of Letters Patent.

Application filed January22, 1907. Serial No. 353,d16.

To all whom it may concern:

sort, of l/vissanickon, in the county of Phila- Brennan .delphia and State of Pennsylvania, have invented anew and useful improvement n l j ofthe same; lfig. 3 is asi Electric Motors, of which the following is a full, clear, and exactdescription,reference.I' v

l chanical details of construction without de-1 being. had to the accompanying. drawings,

forming part of this specification, in I .WillCl1 Figure l is anend view of a motor embodying my invention; Fig. 2 'is a plan view.

de v1ew.- My invention relates to electric motors, and. is more especially designed to provide a motor for heavy work, such as the operation ofrolhtables in iron and steel mills, for use in electric cranes, and for other work where [the motormu'st he started under heavy load.

My invention also consists. in the 'novel construction, arrangement and combination of parts-all substantially as hereinafter deand pointed out .in-the appended claims. y

.Inthedrawingg in which I have. illustrated one form of motor embodying my invention, the numerals 2' designate the two air-matures whose shafts 3 are supported in magnetic' frame.

parallel relation to each other in a single. This frame consists of a base portion 4 and a topiportion 5, the base portion 4 being provided with suitable bearl the 'base' and carryingwhole pole pieces beings 6 for the armature shafts Qgand also for means of the spur gear wheel 8 and pinions 9.- The magnetic frame is provided with the upper whole pole-pieces 10, one above each armature'and with the lower whhle pole pieces 11, one be low each armature; also with the consequent The frame'also'carries the central. leg 13' having a. centralpolepiecel4 common to both armatures. The plane of division o1e's-l2 and 14, whereby each magnetic am'e has'a ha1fpole'piece-12 and a half pole piece 14. The upper and lower poles 1O and 11 are provided with the field coils 15.

. The armature coils, together with the field coils 1 5, are providedwith'the necessary electric connections, for operating the motor'in straight series, with the armatures in'series low and between the two outer sets of been is gearedto' between the base'and the top portions of the frame is preferably centrally through-the allel.

a single magnetic niul manner. described. V H

Variouschanges may be made In" the.me-

Patented 13%.22, 1eo'e. i

parting fromrthe spirit and scope of my invention a "Whatl claim is -v 1. A frame for electric motors comprising av base having threebearings at oneside and three corresponding bearings at the opposite side, a lowermag'netic frame section, rising from the base andcarrying whole polegpiecesbelow and-between the two outer ,sets of bearings, and an upper magnetic frame section supported u on the lower'section an d' PIOVIdBd WitlIW iolepole pieces above'iand between the two outersets of bearings, eachi frame. section having a half' pole piece .at each end and two half pole pieces between the whole pole pieces and in 'alinement with the intermediate set of bearings, theinterrne-j diate pole pieces being c'oredout to receiveai shaft, substantially as described.

2.- An electric motor comprising a base.

having three bearings at one sideand three.- corresponding bearings-at the opposite side,

a'l'ower magnetic frame-section 'rislng from infgs, an upper magnetic frame section supported upon the lower section and provided with whole pole pieces above and between 'the two outer sets ofbearings, each frame section having-a half pole pieceat-each end and twolha lf pole pieces between thewhole' pole pieces and in alinement with the intermediate setof :bearings', the intermediate pole pieces being cored out to receive a shaft,

"an armature located between each set" of Whole pole pieces-and having its shaft jour naled in the adjacent bearings, a power shaft received in the cored out pole pieces, andjournaled in the intermediate set of bearings,

and meshed gears coniiecting the shafts, substantially as'described. a i

3. An electric motor, having magnet frame, parted horizontally in two sections at arr-iron! l The advantages of my invention result from the provision of the two armatures'in:

ti-p'olar frame the g the .neutrzilflinefiahd carrying each two ih- ,tegral fullpole-pieces, an integral vertical 5 end, and each sectionalso having an integral Q eomee yokemember' carried by eachsection centhrough ioetwen" the to:

trally between its two full pole-pieces, the substantially as described. 10 yoke member of'each section carrying a half? Intestimony whereof, I have hereunto set pole piece at each side portion of its free my hand.

- GEORGE W. RICHARDSON. ha1fpo1e piece ateach side', opposite the Witnesses-z I half-pole piece on the yoke membern, said JOSEPH K. ROSE, JR, yoke member. having a shaftopening there; HAR Y K. Amman. 

